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| Puoliohjattu pinoamisryhmä (Semi-supervised Stacking Ensemble)× | Gradient Boosting× | |
|---|---|---|
| Tieteenala | Koneoppiminen | Koneoppiminen |
| Menetelmäperhe | Machine learning | Machine learning |
| Syntyvuosi≠ | 2000s–2010s | 2001 |
| Kehittäjä≠ | Combines Wolpert (1992) stacking with semi-supervised learning principles | Friedman, J. H. |
| Tyyppi≠ | Ensemble (stacked generalization with unlabeled data augmentation) | Ensemble (sequential boosting of decision trees) |
| Alkuperäislähde≠ | Wolpert, D. H. (1992). Stacked generalization. Neural Networks, 5(2), 241–259. DOI ↗ | Friedman, J. H. (2001). Greedy Function Approximation: A Gradient Boosting Machine. Annals of Statistics, 29(5), 1189–1232. DOI ↗ |
| Rinnakkaisnimet | SSL stacking, semi-supervised stacked generalization, self-trained stacking, semi-supervised meta-learning ensemble | Gradient Boosting (GBM), GBM, gradient boosted trees, gradient boosting machine |
| Liittyvät | 5 | 5 |
| Tiivistelmä≠ | Semi-supervised Stacking Ensemble extends the classic stacked generalization framework to settings where only a fraction of training examples carry labels. Base learners are first trained on labeled data, then used to assign pseudo-labels to unlabeled examples; the expanded dataset trains stronger base models whose out-of-fold predictions form the input to a meta-learner, yielding a two-tier ensemble that exploits both labeled and unlabeled structure. | Gradient Boosting is an ensemble learning method, formalised by Jerome H. Friedman in 2001, that combines a sequence of weak learners — typically shallow decision trees — so that each new tree is fitted to minimise the residual errors of the trees before it. It is the core algorithm behind popular implementations such as XGBoost, LightGBM and CatBoost. |
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